Adjustable Resistors

Adjustable resistors, also known as potentiometers, allow a degree of control over the resistance within a circuit. This gives them an advantage over other types of fixed resistor, depending on your needs.
They are composed of a fixed resistive element, and a slider that is able to pass along the element. This is what changes the resistance of the circuit, and it is usually controlled externally.

What are adjustable resistors used for?
Adjustable resistors are most commonly used for volume control in TV and radio. They can also be used as part of a light dimmer, to indirectly affect the level of light.

Types of adjustable resistor
Adjustable resistors largely vary based on material:

  • Wirewound adjustable resistors use a coil of resistance wire, and offer the highest performance.
  • Cermet adjustable resistors are composed of ceramic and metal. They can withstand high temperatures, and are often used in trimmer resistors.
  • Carbon composition adjustable resistors are some of the most common types used, as they are a good all-purpose resistor.
  • Conductive plastic adjustable resistors use conductive plastic ink, and have a low noise output.

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Description Price Resistance Tolerance Power Rating Temperature Coefficient Termination Style Package/Case Technology Mounting Style Case Style Series Dimensions Diameter Length Maximum Operating Temperature
RS庫存編號 788-7772
製造零件編號RSSD30250A1000JB06
BrandVishay
TWD2,127.00
單位
100 Ω 5% 280W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 32 (Dia.) x 250mm 32mm 250mm +450°C
RS庫存編號 891-8580
製造零件編號D50K100KE
BrandOhmite
TWD678.00
單位
100 kΩ ±10% 50W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D50 14.3 x 101.6mm 14.3mm 101.6mm +350°C
RS庫存編號 892-4869
製造零件編號D25K10KE
BrandOhmite
TWD478.00
單位
10 kΩ ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS庫存編號 892-4872
製造零件編號D25K1R0E
BrandOhmite
TWD528.00
單位
1 Ω ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS庫存編號 892-4904
製造零件編號D25K2R0E
BrandOhmite
TWD558.00
單位
2 Ω ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS庫存編號 892-4875
製造零件編號D25K1K0E
BrandOhmite
TWD559.00
單位
1 kΩ ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS庫存編號 161-7576
製造零件編號ZC6/5-FT
BrandCressall
TWD5,624.00
單位
980 mΩ ±10% - - Screw - Wire Wound Bolt On - ZC - - 555mm +50°C
RS庫存編號 892-6685
製造零件編號D25K400E
BrandOhmite
TWD540.00
單位
400 Ω ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS庫存編號 892-4730
製造零件編號D100K250E
BrandOhmite
TWD876.00
單位
250 Ω ±10% 100W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D100 19.1 x 165.1mm 19.1mm 165.1mm +350°C
RS庫存編號 892-4878
製造零件編號D25K1K5E
BrandOhmite
TWD541.00
單位
1.5 kΩ ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS庫存編號 893-0921
製造零件編號E300K4R0E
BrandOhmite
TWD1,416.00
單位
4 Ω ±10% 300W ±400ppm/°C - - - Bolt On, Bracket Vitreous Enamel E300 28.58 x 215.9mm 28.58mm 215.9mm +400°C
RS庫存編號 892-4755
製造零件編號D100K500E
BrandOhmite
TWD901.00
單位
500 Ω ±10% 100W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D100 19.1 x 165.1mm 19.1mm 165.1mm +350°C
RS庫存編號 891-8561
製造零件編號D50K1R0E
BrandOhmite
TWD754.00
單位
1 Ω ±10% 50W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D50 14.3 x 101.6mm 14.3mm 101.6mm +350°C
RS庫存編號 892-4907
製造零件編號D25K50RE
BrandOhmite
TWD523.00
單位
50 Ω ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS庫存編號 788-7790
製造零件編號RSSD30250A47R0JB06
BrandVishay
TWD2,614.00
單位
47 Ω 5% 280W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 32 (Dia.) x 250mm 32mm 250mm +450°C
RS庫存編號 893-0899
製造零件編號E300K10RE
BrandOhmite
TWD1,324.00
單位
10 Ω ±10% 300W ±400ppm/°C - - - Bolt On, Bracket Vitreous Enamel E300 28.58 x 215.9mm 28.58mm 215.9mm +400°C
RS庫存編號 893-5096
製造零件編號D12K100
BrandOhmite
TWD416.40
/個 (每包:25個)
單位
100 Ω ±10% 12W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D12 7.94 x 44.4mm 7.94mm 44.4mm +350°C
RS庫存編號 892-4917
製造零件編號D50K1K0E
BrandOhmite
TWD663.00
單位
1 kΩ ±10% 50W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D50 14.3 x 101.6mm 14.3mm 101.6mm +350°C
RS庫存編號 892-4939
製造零件編號D50K300E
BrandOhmite
TWD611.00
單位
300 Ω ±10% 50W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D50 14.3 x 101.6mm 14.3mm 101.6mm +350°C
RS庫存編號 788-7659
製造零件編號RSSD25168A2R20KB06
BrandVishay
TWD1,710.00
單位
2.2 Ω ±10% 200W - Radial BA25 - Bolt On Vitreous Enamel RSSD 27 (Dia.) x 168mm 27mm 168mm +450°C